Phonograph



April 7, 1942. o. M. DUNNING ETI'AL PHONOGRAP'H Filed Sept. 3, 1938 3Sheets-Sheet Ap 1942- o. M. DUNNING ET AL 2,279,227

' PHONOGRAPH Fil ed Sept. 3, 1938 3 Sheets-Sheet 3 N E TORS- OMQZQMJJunnmg L'ouzs Z. laFores'r TORNEY Patented Apr. 7, 1942 PHONOGRAPHOrville M. Dunning, Glen Ridge, and Louis Z. La Forest, Orange, N. J.,assignors to Thomas A. Edison, Incorporated, West Orange, N. J., acorporation of New Jersey Application September 3, 1938, Serial No.228,272

6 Claims.

This invention relates to phonographs, and more particularly to improvedmeans for controlling the translating devices in phonographs of the typeintended primarily for both the recordation and the reproduction ofdictation.

A phonograph of the class mentioned comprises a record support,typically in the form of a mandrel, and a sound translating devicemounted for movement along the record support and selectively adjustableinto an inoperative condition and respective operative conditions forrecording and reproducing. In a common form of sound translating devicethere are provided one or more elements movable into and out ofrecord-engaging position as the device is adjusted into its operativeand inoperative conditions. Such record engaging elements are of adelicate construction requiring careful handling in order to avoiddamage being done thereto. In this and other similar arrangementswherein a record may be mounted on or removed from its support by amovement thereof relative to the translating device, serious damage maybe done to the record and translating device if an attempt is made tomount the record on, or remove it from, its support whenever the soundtranslating device is adjusted into an operative condition.

It is an object of this invention to provide improved means inphonographs for avoiding such damage to the records and soundtranslating deuse.

Another object is to prevent damage to the record and to delicate partsof the machine by the provision of means automatically operated as anincident to an operation which the operator normally performs as hestarts and stops dictation.

It is another object of this invention to provide, in phonographs,improved means for adjusting the sound translating device into operativeand inoperative conditions as the phonograph driving means are renderedoperative and inoperative.

It is another object of this invention to provide, in phonographs, aselector mechanism for the sound translating device and automatic meansfor adjusting the sound translating device in accordance with thesetting of the selector mechanism.

It is a still further object to provide, in phonographs, power operatedand manually controlled means for adjusting the sound translating deviceinto its respective operative and inoperative conditions.

Other and allied objects will. more fully appear from the followingdescription and the appended claims.

In the description of our invention reference is had to the accompanyingdrawings, of which:

Figure 1 is a top plan View of a phonograph in which a preferred form ofour invention is in-' corporated;

Fig. 2 is a vertical cross-sectional view taken along the line 2-2 ofFig. 1 showing electrical means for adjusting the sound translatingdevice, the translating device and a control lever therefor being shownin their respective inoperative positions;

Fig. 3 is a vertical cross sectional view of the carriage showing thesound translating device and the adjusting mechanism provided thereforin side elevation, the control lever for the sound translatingdevicebeing in recording position;

Fig. 4 is a horizontal cross-sectional View of a portion of themechanism of Fig. 3-taken substantially along the line 4 '4 of Fig. 3,but show ing the control lever and associated parts in inoperativeposition;

Fig. 5 is a diagrammatic view, partly in perspective, of mechanism andcircuits in accordance with our invention.

Reference being had to Figs. 1 and 2, in particular, there will be seena form of phonograph to which our invention is especially well adapted.

This phonograph comprises a base I having integrally formed therewiththe left and right upright standards 2 and 3 and the intermediatestandard 4. There is journalled in the standard 4 a shaft 5 bearing arecord support or mandrel 6 which removably carries a cylindricalrecord 1. The mandrel 6 is preferably of a form comprising a taperedcylinder having a contractible and expansible chuck 8 at its open orrightward end which is adapted to be operated by imparting axialmovement to a handpiece 8'; such a mandrel is disclosed in GramannPatent No. 2,010,717, issued on August 6, 1935, and entitled Phonograph.The left and right standards 2 and 3 support forward and rearwardlongitudinal rods 9 and won which a carriage II is slidably mounted formovement along the record I. The carriage has a forwardly extending armll supporting a sound translating device [2 which, in its usual form, isselectively adjustable for sound recording and sound reproducing. Forconducting the sound waves to and from the sound translating device I2there is provided a flexible tube l3 carrying, at its far end, ahandpiece [3 usable as a mouthpiece for recording, and as an earpiecefor reproducing. On the handpiece l3 there front left-end sectionthereof, wherein there is provided an inclined raised portion l',carrying a pivot screw which the arm l extends. The arm l5islresiliently maintained in an .upward position,.as

shown in Fig. 2, and is arranged to swingidownwardly when the handpiece.|3'- is placedthereon to operate a switch l6 serially connected in apower circuit I1, which circuit is connected to l5 about which the armI5 is pivoted and having a suitable opening through of electromagnets"terminal positions in that mentioned type is shown diagrammatically inFig. 1 and comprises two sets of electromagnets 38 and 38' operating thearmatures 39 and 39', of which the armature 39' is coupled to the lever33 by the link 33'. As appears in the mentioned Langley patent, when acircuit is established to cause current to flow through one set ofelectromagnets, both armatures are swung in the direction of that set tooperate the clutch. When the armatures have substantially reached theirmovement, a suitable switch is operated to break the circuit of the setthrough which current has been passing and toprepare the circuit of. the

the phonograph with a suitablepower sourceby way of a plug H, asschematically shown in Fig. 5.

During operation of the machine, the carriage I is moved steadily alongthe record 1 longitudinallythereof by means of a feed screw l8journalled in the left and right standards 2 and 3 and coupled to theshaft 5 by a train of gears I9. On the carriage N there is provided afeed nut which is arranged to couple the carriage to the feed screw l8.The feed nut 20 may be aptly located in the rearward hollow portion ofthe carriage and may be secured to a bracket 2| pivotally connected tothe carriage by a pin or rod 22 supported by the side walls of thecarriage. In order that the carriage may be readily disconnected fromthe feed screw l8 and be manually movable along the mandrel at will,there is provided'on the bracket 2| a forwardly extending arm 23 havinga cam face 23' co'acting with a lateral pin 24 provided on the hub 25 ofa control lever 26. The control-lever 26 is pivotally mounted'on acarriage sleeve 9 embracing the rod 9, the control lever extendingupwardly through a slot 21 in the carriage. When the lever 26 is in itscentral or neutral position the bracket 2| is maintained in its mostcounterclockwise position by the coaction of the cam face 23' with thepin 24, the feed nut 20 then being free of the feed screw l8. Forwardand rearward rocking movementsof the control lever 26 from" its neutralposition, however, act to free the pin 24 of the cam face 23 so that thebracket 2| may turnin a clockwise direction, as by reason of a tensionspring 28, tobring the feed nut 20 into engagement with the feed screwl8. The mandrel 6 is rotated by a motor M, shown schematically in Fig.5, which may be coupled as bya belt to a pulley 29. This pulley isrotatably mounted on the inner side of the standard 2 and isaxiallyinline with the shaft 5 to which it is adapted to be connected bya clutch. This clutch may comprise a toothed member 30 secured to thepulley'29, and another toothed member 3| splined to the shaft 5formovement into and out of engagement with the member 30. Such movement ofthemember 3| may be effected by imparting a rocking movement to a lever33 pivotally mounted on a bracket. 34 secured to the standard 4 by thescrews 35. The lever 33 carries a pin 36 engaging an annulargroove 32provided in the clutch member 3|, and extends downwardly therefrombeneath the base plate I to make connection with suitable actuatingmeans, this means being preferably of the form described in LangleyPatent No. 1,380,486, issued June '7, 1921, andentitledControllingdevice. -A clutch-actuating mechanism 31 of the aforeotherset of electromagnets for operation. When the other set ofelectromagnets is energized, the reverse operation takes place, theclutch bein shifted to its other position, the circuit through the lastmentioned set of electromagnets being broken, and the circuit of thefirst set of electromagnetsbeing again prepared for operation. In Fig; 5there is shown the circuit diagram of the phonograph control circuits,including the electrical circuits incorp'orated in the herein disclosedembodimentof :our invention. From this diagram it. will be seen that theswitch It controls the power supply to all of the power-operated'mechanisms of the phonograph, and that the operation of themotor M isfully controlled by this switch. When the handpiece I3 is resting onthe'arm. 15, the switch I6 is opened to disconnect the phonograph from itspower source; but when the handpiece I3 is removed from the arm l5, aswhen the phonograph is to be put into' use, the switch I6 is closedto'put the motor M in operation and to render the other power-operatedmechanisms operative. The pulleyn29, which is coupled to the motor M,thus moves continuously during the use of the phonograph. 1

The switch l4 on the handpiece I3 is arranged to control theclutch-actuating mechanism 31 shown diagrammatically in a simplifiedform in Fig. 5. The switch I4 is of the single-pole twoway typecomprising a pole member 39 and the contact members 40 and 4|. Theswitch has a base portion integral with the handpiece l3, and arelatively movable portion or cover 42 secured to the handpiece by apivot screw 43, as shown in Fig. 1. The cover 42 is preferablyresiliently maintained in its upward position in any convenient manner,as by an upward bias of the pole member 39; in this position the polemember 39 makes electrical connection with the contact member 40. As thecover 42 is moved downwardly the pole member 39 breaks contact with thecontact member 40 and thereafter makes contact with the contact member4|.

The switch I4 is suitably connected to the actuating mechanism 31 bymeans of a, three-wire cable 44 extending along and within the flexibletube Hi to the sound translating device I2, at which point the cable issuitably extended onwardly within a flexible protective casing 45 to theactuating mechanism 31. The cable 44 is connected so that the contactmembers 40 and 4| are associated with the respective sets ofelectromagnets 38 and 38 of the mechanism 31. When the cover 42 of theswitch I4 is resting in its outward position, with the pole member 39making connection with the contact member 49, the clutch -is adapted tobe in disengaged position, the circuit of the electromagnets 38' thenbeing open so that no current will vpass through the mechanism 31. Butas the switch 14 is operated to make connection between the pole member39? and the contact member 44, current Will pass momentarily" throughthe electromagnets 38 sov as to operate the mechanism 31 to engage theclutch. When the switch is again operated to make connection between thepole member 39 and the contact member 40, current will pass momentarilythrough the el'ectromagnets 38 to operate the mechanism 3? to disengagethe clutch. The rotation of the record and the movement of thetranslating device along the record for recording thereon or reproducingtherefrom are thus readily controlled by the hand switch M.

The sound translating device i2, which is well known in the art,comprises an inverted cup member 46 (see Fig. 3) provided withanupwardlyextending neck 46 to which may be suitably connected theflexible speaking, tube l3. The:

' member 46 has also a downwardly extending lug 41 which carries a crosspin 48 having conical end portions forming pivots for a pair of angularspring arms 49 attached to a sound box 50 disposed substantiallyconcentrically with, the cup member 46. The sound box 50 carries astirrup bearing a recorder stylus 52. The sound chamber of the sound box50 communicates with the neck 46' by means of a tube 53 which forms auniversal joint with an apertured dome 50- of the sound box 50. By thisarrangement any swinging movement of the sound box 50'is caused to beaccompanied by a sliding movement of the tube 53 within the neck 46, thesound box, 55. being thus maintained in communication with the speakingtube l3 throughout such swinging movement.

The translating device I2 is also provided with a biasing weight 54which is normally used-only during the operation of reproducing. Thisweight is disposed. between the sound box 50 and the record 1 and ispivotally secured to an arm 55 by means of a shoulder screw 56, the arm55 being pivotally mounted on the cross pin 48. The weight 54 is thusfree to Swing in a transverse direction about the screw 56 and. in avertical direction about the pin 48. The weight 54 is suitably aperturedto permit the stirrup 5| and the stylus 52 to extend freely therethroughduring the recording operation. The weight 54 carries. a cross-pin 58 onwhich is pivoted an angular stylus lever 51, shown in Fig. 3. The outeror lower end 57 carries a reproducing. stylus'59 and the inner end 51"'is positioned within the stirrup 5| at all times.

Inthe adjustment |2 for recording, both the sound box 50 and the weight54 are permitted to move downwardly, the weight 54 moving to a positionin which it may be suitably supported by the record 1, and in which itplays sound box 50 moving downwardly until the recorder stylus 52engages the record l. As so adjusted, sound waves conducted into thechamber of the sound box 50, by way of' the. tube I3, will actuate therecorder stylus 52 to form on the record, as the record 1 is'rotatedandthe carriage H is moved steadily'forwardly therealong, a continuousgroove having modulations in accordance with the sound waves.

In the adjustment of the translating device |2 for reproducing, thesound box 50 is moved into an upward position wherein the recorderstylus 52 is free of the record I and the weight 54 is left in a freefloating condition. The rearward end 51" of the stylus lever 51, whichlies of the translating. device no'part in recording, and thespeakingwithin thestirrup, 5|, is thus also moved upward.- lywith the latter.The weight 54, being in a free floating condition, urges the reproducerstylus lever 51 downwardly so a to bias the reproducer stylus 59 againstthe record I. The weight 54 moreover provides suflicient inertia so thatvibrations imparted to the reproducer stylus 59, as it tracks amodulated groove of a rotating record, are almost wholly transmitted tothe sound box Sound waves will thu 'be created within the sound box 50,in accordance with the modulations of the groove being tracked, andthese waves will be conducted outwardly by way of the tube t3.

In the adjustment of the translating device I2 to inoperative conditionboth the sound box 50 and biasing weight 54- aremoved upwardly to freethe styli 52 and 51 of the record supported .by the mandrel 6, as shownin Fig. 2. It is only when the translating device I2 is so adjusted thata record may be safely mounted on, or removed from, the mandrel 6'.Heretofore it has been customary to adjust the translating device bymeans of the control lever 26, this adjustment being arranged so thatrecording and reproducing adjustments are effected when the controllever 25 is in its respective forward and rearward positions, and sothat a neutral or inoperative adjustment is efiected when the lever isin its neutral or central position. In this known arrangement there wasno protective means for preventing the operator from accidentallymanipulating the record with respect to the mandrel 6 while thetranslating device was adjusted in an operative condition. The recordand translating device were thus subjected to the hazard of beingdamaged. vAs a protective means against such hazard it has beencustomary to partially obstruct the free mountingofia record on themandreL or its removal thereirom,'whenever the translating device isadjusted in' an operative condition. This operation has not beenaltogether satisfactory, since it does not guard the mandrelsufficiently to prevent the operation of its ejecting mechanism, theoperator being thus permitted to at least partially remove a record fromthe mandrel while the translating device is adjusted in an operativecondition.

In our invention we provide means for automatically adjusting a soundtranslating device into operative and inoperative conditions, as anincident of putting the phonograph into and out of operation. example,be responsive toi. e., called into play by the manipulation of-the meanscontrolling the record rotation and/or the carriage movement, such meansbeing in the present instance the switch 14. This adjusting means may beoperated in various suitable Ways, such as by the power means of thephonograph or by a separate actuating mechanism. Whenever the soundtranslating device is of a combined form adapted for both recording andreproducing, we provide a manually or otherwise operable selectormechanism which is adapted to limit and control the function of theadjusting means. This selector mechanism is preferably provided with aninoperative or neutral position and an operative position for eachfunction of the translating device. When the selector mechanism is inneutral position the translating device is rendered inoperative;however, when the selector mechanism is set in an operative position;the translating device is adjustable, as by the automatic adjustingmeans provided therefor, between i'n This adjusting means may, for- 4operativezcondition and that operative condition'which'corresponds tothe setting of the selector mechanism. I

In Figs. 1, 2, 3 and 4 there is shown an embodiment of our inventioncomprising a selector mechanism controlled .by the manually operablelever 26, and an actuating mechanism 66 for adjusting, .or shifting theadjustment of, the translating device in accordance with the setting ofthe selector mechanism. In this arrangement the translating device 12 isadjusted to its various positions by the suitable operation of a pair ofangular liftingarms 61 and 62 fulcrumed on the rod 22 and arranged toengage with respective lifting tabs 50" and 54" on the sound box 50 andthe biasing weight 54. The arm 6|,controlling the sound box 56, isextended upwardly from its pivoting axis and there connected .with atension spring 63, the spring 63 making. connection at itsother end witha rod 63 on the carriage, so as to bias the ar 61 in an upwarddirection. The control lever 26 controls the movement of the arm 6|through a cam 64 on the arm 61 and the pin 24 on the hub of the controllever 26. This cam is arranged to maintain the arm 6| in its mostdownward position when the control lever 26 is in its forward orrecording position. As the control lever 26 is returned to neutral orinoperative position, the arm 61 is moved in an upward direction, as bythe force of the spring 63, to place the sound box 50 substantially inits most upward position when the control lever 26 reaches neutralposition. As the controllever is moved into its most rearward orreproducing position, the pin 24 moves pasta detent 64 onthe arm 61,which serves to yieldably retain the control lever in its reproducingposition; the arm 6| is,v however, retained by the spring 63 in anupward position wherein to effect an upward biasing of the sound box 50against the frame 4601? the translating device.

The arm 62, controlling the biasing weight 54, is mechanically free ofthe control lever 26 and is operated by the actuating'mechanism 66controlled by the hand switch 14, such control being, however,restricted by the control lever 26, as is hereinafter explained. Theactuating mechanism 60 (seeFigs. 2 and 3) is in all respects similar tothe actuating mechanism 31 and comprises two sets of electromagnets 65and65' having the respective cores 66 and 66 and operating the pivotedarmatures 61 and 61. The armatures 61 and 61- are respectively providedwith coacting cam portions 61a and 61a resiliently maintained inengagement by a tension spring 68. In operation, the armatures arealternately actuated, the cam portions 61a and 61a; being adapted sothat the unactuated armature remains locked in position until theactuated armature reaches the end portion of its travel. At this timethe lock on the unactuated armature is removed and this armature thenmoves by the force of the spring 68 toward the other into a position forsubsequent actuation. Such movement of the unactuated armature serves tolock the armature last actuated. When the electromagnets correspondingto the armature unactuated in the last operation, are now energized thereverse process takes place.

Interposed between the armatures 61 and 61 is an insulatedly andpivotally mounted arm 69 carrying a vibration and sound absorbing'pad10, commonly made of felt. The arm 69 is connected with a switch arm 11serving as a pole member for, alternately making connection with a pairof contact members 12 and 12. As the armatures are alternately actuatedthe switch arm 1| remains in position until the unactuated armaturemoves, the switch arm 11 then being rocked to its other position. Whenthe mechanism 60 is in the position shown in Fig. 2, the armature 61having been last actuated, the switch arm 11 makes connection with thecontact member 12' which is connected with one side of theelectromagnets the contact member 12 bein connected with theelectromagnets 65, as shown in Fig. 5. If the electromagnets 65' arethen energiz ed by way of a circuit including the contact member12' andthe switch arm 11, the armature 61 will move to its rightward position(see Fig. 2) and then the armature 61 will move rightwardly and therebybreak the circuit of the electromagnets 65'. If the electromagnets 65are then energized by way of a circuit including the contact member 12and switch arm 11, the reverse operation takes place, the armature 61moving to its leftward position and the armature 61'then movingleftwardly to break the circuit of the electromagnets 65.

In order that the mechanism 60 may be properly controlled by the handswitch l4 the sets of electromagnets 65 and 65 are connected, on thesides opposite to those making connection with thecontact members 12 and12, to the respective contact members 40 and 4| of the handswitch, andthe switch arm 1| is connected to the power source on the side oppositeto that making connection with the pole member 39 of the hand switch l4.By this arrangement the armatures 61 and 61' are caused to be in theirrespective leftward positions, as shown in Fig. 2, when; the switch 14is in its normally outward position with the pole member 39 making con:nection with contact member40, and the armatures 61 and 61 are caused tobe in their respective rightwardpositions when the switch 14 is thrownto its other position.

The armature 61 is connected to the lifting arm 62 by means of a linkmember 13. This member is suitably connected to the arm 62 by a stud 14secured to the arm 62, extending rightwardly of the carriage through anopening 14' and pivotally connected to the member 13 by means of ashoulder screw 13. The link member is also pivotally connected to thearmature 61 by a shoulder screw 15, and is of a length such that thelifting arm 62 will be in its upward position when the armature 61 is inits leftward position, as shown in Fig. 2. The biasing weight 54,controlled by the arm 62, is then maintained in its upward position, andconsequently the sound box 56, disposed directly above the biasingweight, is then necessarily in its upward position. When the actuatingmechanism 60 is operated so that the armature 61 is moved rightwardly,the lifting arm 62 moves downwardly to permit a free downward movementof the biasing weight 54 into a position wherein'it is supported by the'record. With this arrangement there may be desirably provided means forlocking the control lever 26 against movement from one position toanother while the translating device is in an operative condition. Suchlocking means may comprise an upward extension 62' on the arm 62, whichengages with the teeth 62" on the hub 25 of the control lever 26 whenthe arm is in a downward position. The operation of the adustingmechanism of the translating devic I2 is thus as follows:

With'the control lever 26 in recording position.

as shown inFig. 3, the translating device may be adjusted betweeninoperative and recording conditions. The arm 6| is then in its downwardposition, permitting free downward movement of the sound box 55 untilthe recorder stylus 52 engages the record. With the hand switch I4 innormal inoperative'position, as shown in Fig. 1, the armature 61 is inits leftward position, the arm 62 being then in its upward position, andthe biasing weight 54 and sound box 50 therefore being in an upward orinoperative position. When the switch I4 is operated downwardly to startrotation of the record and forward movement of the carriage, themechanism 60 is operated to bring the arm 62 into a downward position.The weight '54 and sound box 59 may then move downwardly into suitablepositions for recording. When the switch I4 is again operated to stopthe movement of the carriage and the rotation of the record, themechanism 60 is operated to move the weight 54 and sound box 53 intoinoperative positions.

When the control lever 26 is in its rearward or reproducing position,the translating device may be adjusted between inoperative andreproducing conditions. The arm BI is then in its upward position forsupporting the sound box 59 in the position in which it is adapted to belocated for reproducing; whereas the arm 62 is again operated betweenupward and downward positions, as the switch M is operated to start andstop movements of the record and carriage, for respectively adjustingthe translating device into its inoperative and reproducing conditions.

In order to insure that the translating device will be maintained ininoperative condition when the control lever 26 is in neutral position,the actuating mechanism 50 is rendered inoperative to move the liftingarm 62 downwardly while the control lever 25 is in such neutralposition. This inoperation of the mechanism 60 is effected by means of aswitch 16, shown in Fig. 1, which is serially connected in the circuitof the electromagnets 65, this switch being open when the control lever28 is in neutral position. The

switch 76 comprises a pair of normally open contact arms 71 and 18 whichare insulatedly supported preferably in a molded frame 79 resting on thecarriage I l. Pivotally secured to the control lever 26, intermediatelythereof, is a bar 80 having a longitudinal slot 8| through which passesa shoulder screw 82 threading into the frame 19. The bar is thus adaptedto slide forwardly and rearwardly as the control lever 28 is moved intorecording and reproducing positions. Insulatedly connected to the bar 88is a pin 83 slidably contacting a cam portion 11' of the adjacentcontact arm 11 for moving the arm rightwardly into contact with the arm78, as the control lever 26 is operated from neutral position to eitherrecording or reproducing position. The mechanism 50 is thus fullyoperable when the control lever 26 is in recording and reproducingpositions but it is restricted so that it cannot shift the translatingdevice from an inoperative condition to an operative condition when thecontrol lever 26 is in neutral position, the mechanism 60 being,however, operative to shift the translating device from an operativecondition to an inoperative condition when the control 26 is in suchneutral position.

Although we have shown and described our invention in terms of a certainembodiment, it will be understood that many modifications and changesmay be made therein without departing from the scope of our invention,which we undertake to express according to the following claims;

WelClaim:

1. 'In a phonograph having. record rotating means}: in combination,means for controlling said record-rotating means; a sound translatingdevice adjustable from an inoperative condition into respectiveoperative conditions for recording and reproducing; a manuallycontrollable. selector. mechanism for said translatin device having atleast recording and reproducing settings; means, responsive to the meanscontrolling said record-rotating' means, for effecting adjustment ofsaid translating device between inoperative condition and the operativeconditioncorresponding to the setting of'said' selector mechanism; andmeans for locking said selector mechanism against movement from onesetting to another while said record-rotating means is in operation.

2. In a phonograph: in combination, a sound translating deviceadjustable between an inoperative condition and respective operativeconditions for recording and reproducing; selector means for saidtranslating device, characterized by a neutral position and respectiveoperative positions for recording and reproducing; means, operable whensaid selector means is in an operative position, for adjusting saidtranslating device between inoperative condition and the operativecondition corresponding to the setting of said selector means; andmeans, influencing said adjusting means while said selector means is inneutral position, for restricting the adjustmentof said translatingdevice from operative to inoperative conditions only.

3. In a phonograph including record-support rotating means: thecombination of control means controlling said record-support rotatingmeans and operable either to render the latter operative or inoperative;a translating device and means associated therewith for adjusting it, inrelation to a record on said support, either into inoperative conditionor respective operative conditions for recording and reproducing; and anoperative connection between said control means and said adjusting meansand effective when the control means is in position to render therecord-support rotating means operative, for rendering said adjustingmeans inoperative.

4. In a phonograph having means for rotating a record and meansassociated with the latter for controlling the same: the combination ofa translating device and means cooperating therewith to adjust it inrelation to the record into operative and inoperative conditions; means,connecting said record-controlling means with said adjusting means, forcausing said translating device to be adjusted into operative andinoperative conditions upon the starting and stopping of recordrotation; manually operable means selectively movable either to rendersaid adjusting means eiiective or to maintain said translating device ininoperative condition; and means operatively connected with saidadjusting means and rendered efiective in the actuation of the same toplace said translating device into operative condition, for locking saidmanual means.

5. In a phonograph having record-support rotating means: the combinationof control means associated with said record-support rotating means forrendering the latter operative and inoperative; a translating deviceadjustable in rotating means:

same to render it efiective to from operative to and controllable torestrict the' tive operative conditions for recording and reproducing,said adjusting mechanism including means to shift said device betweenoperative and inoperative conditions and selector means movable from aneutral position into recording and reproducing positions to select theoperative condition effected by said shifting means; means to lock saidselector means while said shiftin means isin operative position; andmeans, rendered efiective by said selector means in the movement thereofinto neutral position, for restricting actuation of said shifting meansto movement from operative to inoperative positions only.

'ORVILLE M.*DUNNING.'

LOUIS Z. LA FOREST.

